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Combining Quadratics

Combining Quadratics. Objective: to select the correct method for solving a quadratic. Starter: Which one do I use?. Use your whiteboards to tell me how you would attempt these questions. Some quick hints!. Factorizing:. (x+5)(x-4)=0. The formula:. Completing the square:.

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Combining Quadratics

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  1. Combining Quadratics Objective: to select the correct method for solving a quadratic. Starter: Which one do I use? Use your whiteboards to tell me how you would attempt these questions.

  2. Some quick hints! Factorizing: (x+5)(x-4)=0 The formula: Completing the square: It's a square! Now complete it! Put it into the form (x+a)2 + b

  3. Quadratics Race. In teams of 2-3 You need to solve the problems to gain the clue cards. There are 6 clue cards to collect in total to solve the final problem. The first team to complete wins!

  4. y 20 18 16 14 12 10 8 6 4 2 4 5 3 -2 -1 2 0 1 x -2 -4

  5. y 20 18 y = x2 - 4x + 8 16 3 x -1 -2 4 0 2 5 1 14 y 12 10 8 6 4 2 4 5 3 -2 -1 2 0 1 x -2 -4

  6. y 20 18 y = x2 - 4x + 8 16 3 x -1 -2 4 0 2 5 1 14 y 20 5 8 13 5 13 4 8 12 10 8 6 4 2 4 5 3 -2 -1 2 0 1 x -2 -4

  7. y 20 18 y = x2 - 4x + 8 16 3 x -1 -2 4 0 2 5 1 14 y 20 5 8 13 5 13 4 8 12 10 8 6 4 2 4 5 3 -2 -1 2 0 1 x -2 -4

  8. 20 18 y = x2 - 4x + 8 16 3 x -1 -2 4 0 2 5 1 14 y 20 5 8 13 5 13 4 8 12 10 8 6 4 2 4 5 3 -2 -1 2 0 1 -2 -4

  9. 20 18 y = x2 - 4x + 8 16 3 x -1 -2 4 0 2 5 1 14 y 20 5 8 13 5 13 4 8 12 10 8 6 4 2 4 5 3 -2 -1 2 0 1 -2 -4

  10. Discuss a thought bubble and self assessment with your partner.

  11. Hidden Quadratics! y = x+ 2 x2 + y2 = 2

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